Thermochemical stability and nonstoichiometry of yttria-stabilized bismuth oxide solid solutions

H. Kruidhof; K.J. de Vries; A.J. Burggraaf

doi:10.1016/0167-2738(90)90246-N

Thermochemical stability and nonstoichiometry of yttria-stabilized bismuth oxide solid solutions

H. Kruidhof, K.J. de Vries, A.J. Burggraaf

Inorganic Membranes

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Abstract

The thermochemical stability of fast oxygen ion conducting yttria stabilized bismuthoxide (YSB) solid solutions containing 22.0–32.5 mol% of yttria was investigated. It was shown that in the temperature range between 650–740 C the stabilized cubic δ-phase containing less than 31.8 mol% of yttria is not stable during long term annealing treatments (greater-or-equal, slanted 500 hours). During annealing at 650 C a sluggish transformation from the cubic to hexagonal phase appears, while above 740 C this hexagonal phase is converted very fast into the cubic phase again. It was shown, that the oxygen content of YSB solid solutions is a function of temperature and oxygen partial pressure

Original language	English
Pages (from-to)	213-215
Journal	Solid state ionics
Volume	37
Issue number	2-3
DOIs	https://doi.org/10.1016/0167-2738(90)90246-N
Publication status	Published - 1990

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IR-61546

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10.1016/0167-2738(90)90246-N

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title = "Thermochemical stability and nonstoichiometry of yttria-stabilized bismuth oxide solid solutions",

abstract = "The thermochemical stability of fast oxygen ion conducting yttria stabilized bismuthoxide (YSB) solid solutions containing 22.0–32.5 mol% of yttria was investigated. It was shown that in the temperature range between 650–740 C the stabilized cubic δ-phase containing less than 31.8 mol% of yttria is not stable during long term annealing treatments (greater-or-equal, slanted 500 hours). During annealing at 650 C a sluggish transformation from the cubic to hexagonal phase appears, while above 740 C this hexagonal phase is converted very fast into the cubic phase again. It was shown, that the oxygen content of YSB solid solutions is a function of temperature and oxygen partial pressure",

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T1 - Thermochemical stability and nonstoichiometry of yttria-stabilized bismuth oxide solid solutions

AU - Kruidhof, H.

AU - de Vries, K.J.

AU - Burggraaf, A.J.

PY - 1990

Y1 - 1990

N2 - The thermochemical stability of fast oxygen ion conducting yttria stabilized bismuthoxide (YSB) solid solutions containing 22.0–32.5 mol% of yttria was investigated. It was shown that in the temperature range between 650–740 C the stabilized cubic δ-phase containing less than 31.8 mol% of yttria is not stable during long term annealing treatments (greater-or-equal, slanted 500 hours). During annealing at 650 C a sluggish transformation from the cubic to hexagonal phase appears, while above 740 C this hexagonal phase is converted very fast into the cubic phase again. It was shown, that the oxygen content of YSB solid solutions is a function of temperature and oxygen partial pressure

AB - The thermochemical stability of fast oxygen ion conducting yttria stabilized bismuthoxide (YSB) solid solutions containing 22.0–32.5 mol% of yttria was investigated. It was shown that in the temperature range between 650–740 C the stabilized cubic δ-phase containing less than 31.8 mol% of yttria is not stable during long term annealing treatments (greater-or-equal, slanted 500 hours). During annealing at 650 C a sluggish transformation from the cubic to hexagonal phase appears, while above 740 C this hexagonal phase is converted very fast into the cubic phase again. It was shown, that the oxygen content of YSB solid solutions is a function of temperature and oxygen partial pressure

KW - IR-61546

U2 - 10.1016/0167-2738(90)90246-N

DO - 10.1016/0167-2738(90)90246-N

M3 - Article

VL - 37

SP - 213

EP - 215

JO - Solid state ionics

JF - Solid state ionics

SN - 0167-2738

IS - 2-3

ER -

Thermochemical stability and nonstoichiometry of yttria-stabilized bismuth oxide solid solutions

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